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    • 11. 发明申请
    • SYSTEM AND METHOD TO OBTAIN SIGNAL ACQUISITION ASSISTANCE DATA
    • 获取信号获取辅助数据的系统和方法
    • US20120220294A1
    • 2012-08-30
    • US13214055
    • 2011-08-19
    • Peter GaalLeonid SheynblatChristopher PatrickWyatt Thomas Riley
    • Peter GaalLeonid SheynblatChristopher PatrickWyatt Thomas Riley
    • H04W24/00
    • G01S19/25G01S19/254G01S19/258G01S19/27
    • Signal acquisition assistance data is obtained for receiving devices such as wireless position assisted location devices seeking signals from any source, such as satellite vehicles and base stations. The data may be obtained from previously acquired data, based upon evaluation of changes in parameters such as time and location that may jeopardize validity. In some cases the data may be adjusted for the changes in parameters. Refined data may be calculated by a receiver using partial measurements of signal sets, particularly if the acquisition assistance data provided by a remote entity includes more distinct parameters than have typically been provided. New data need not be obtained until the validity of previous data expires due to limitations upon temporal extrapolation using Doppler coefficients, unless mobile station movement that cannot be compensated is detected, and jeopardizes validity of the previous data.
    • 获得信号获取辅助数据,用于接收诸如无线位置辅助位置设备之类的设备,寻找来自诸如卫星车辆和基站的任何来源的信号。 可以基于对可能危及有效性的诸如时间和位置的参数的变化的评估,从先前获取的数据获得数据。 在某些情况下,可能会根据参数的变化调整数据。 精细数据可以由接收机使用信号组的部分测量来计算,特别是如果由远程实体提供的获取辅助数据包含比通常提供的更多不同参数。 除非先前数据的有效性由于使用多普勒系数的时间外推的限制而过期,否则不需要获得新数据,除非检测到无法补偿的移动台移动,并且危及先前数据的有效性。
    • 12. 发明授权
    • System and method to obtain signal acquisition assistance data
    • 获取信号采集辅助数据的系统和方法
    • US08031113B2
    • 2011-10-04
    • US10554629
    • 2004-04-02
    • Peter GaalLeonid SheynblatChristopher PatrickWyatt Thomas Riley
    • Peter GaalLeonid SheynblatChristopher PatrickWyatt Thomas Riley
    • G01S19/25
    • G01S19/25G01S19/254G01S19/258G01S19/27
    • Signal acquisition assistance data is obtained for receiving devices such as wireless position assisted location devices seeking signals from any source, such as satellite vehicles and base stations. The data may be obtained from previously acquired data, based upon evaluation of changes in parameters such as time and location that may jeopardize validity. In some cases the data may be adjusted for the changes in parameters. Refined data may be calculated by a receiver using partial measurements of signal sets, particularly if the acquisition assistance data provided by a remote entity includes more distinct parameters than have typically been provided. New data need not be obtained until the validity of previous data expires due to limitations upon temporal extrapolation using Doppler coefficients, unless mobile station movement that cannot be compensated is detected, and jeopardizes validity of the previous data.
    • 获得信号获取辅助数据,用于接收诸如无线位置辅助位置设备之类的设备,寻找来自诸如卫星车辆和基站的任何来源的信号。 可以基于对可能危及有效性的诸如时间和位置的参数的变化的评估,从先前获取的数据获得数据。 在某些情况下,可能会根据参数的变化调整数据。 精细数据可以由接收机使用信号组的部分测量来计算,特别是如果由远程实体提供的获取辅助数据包含比通常提供的更多不同参数。 除非先前数据的有效性由于使用多普勒系数的时间外推的限制而过期,否则不需要获得新数据,除非检测到无法补偿的移动台移动,并且危及先前数据的有效性。
    • 14. 发明申请
    • METHOD AND APPARATUS FOR PROCESSING NAVIGATION DATA IN POSITION DETERMINATION
    • 用于处理位置确定中的导航数据的方法和装置
    • US20090079636A1
    • 2009-03-26
    • US12239639
    • 2008-09-26
    • Wyatt T. RileyChristopher Patrick
    • Wyatt T. RileyChristopher Patrick
    • G01S3/02
    • G01S5/0221G01S5/0278G01S19/39
    • Methods and apparatuses for the processing of false alarms in position determination. At least one embodiment of the present invention estimates and uses measurement false alarm probabilities in the position determination process. In one embodiment, the estimated measurement false alarm probabilities are combined to determine the reliability of the determined position solution or the reliability of the set of measurements as a collection. In one embodiment, the estimated measurement false alarm probabilities are used in the isolation and elimination of faulty measurements. For example, the traditional geometry based metric for identifying a faulty measurement is further weighted according to the measurement false alarm probabilities in order to determine the faulty measurement.
    • 在位置确定中处理假警报的方法和装置。 本发明的至少一个实施例在位置确定处理中估计和使用测量误报概率。 在一个实施例中,组合估计的测量误报概率以确定确定的位置解的可靠性或该组测量的可靠性作为集合。 在一个实施例中,估计的测量误报概率用于隔离和消除故障测量。 例如,为了确定有故障的测量,根据测量误报概率进一步加权用于识别故障测量的传统的基于几何的度量。
    • 16. 发明申请
    • Method and apparatus for increasing coherent integration length while receiving a positioning signal
    • 在接收定位信号时增加相干积分长度的方法和装置
    • US20060114984A1
    • 2006-06-01
    • US10991625
    • 2004-11-17
    • Peter GaalChristopher Patrick
    • Peter GaalChristopher Patrick
    • H04B1/66
    • G01S19/09G01S19/23G01S19/235G01S19/29
    • A receiving method and apparatus for increasing coherent integration length while receiving a positioning signal from transmitters such as GPS satellites. In order to compensate for frequency drifts that may occur in the positioning signal, a hypothesis is made as to the frequency drift, which is inserted into the receiving algorithm. Advantageously, the length of coherent integration can be increased at the expense of reducing the length of incoherent integration while keeping the total integration length the same, the net effect of which is an increase in signal detection sensitivity. The frequency drift hypothesis has any appropriate waveform; for example, approximately linear or exponential. The hypothesized frequency drift can be inserted into the receiver algorithm in any suitable place; for example, the data block may be adjusted for the hypothesized frequency drift, alternatively the reference signal may be adjusted, or the frequency samples of either the data block or the reference signal may be adjusted.
    • 一种用于在从诸如GPS卫星的发射机接收定位信号的同时增加相干积分长度的接收方法和装置。 为了补偿定位信号中可能出现的频率漂移,就会对插入到接收算法中的频率漂移进行假设。 有利地,相干积分的长度可以以降低非相干积分的长度为代价而增加,同时保持总积分长度相同,其净效应是信号检测灵敏度的增加。 频率漂移假说有任何适当的波形; 例如,大致线性或指数。 假设的频率漂移可以在任何合适的地方插入接收机算法; 例如,可以针对假设的频率漂移来调整数据块,或者可以调整参考信号,或者可以调整数据块或参考信号的频率样本。
    • 17. 发明授权
    • Forward link repeater frequency watermarking scheme
    • 前向链路中继器频率水印方案
    • US06961367B2
    • 2005-11-01
    • US10392442
    • 2003-03-17
    • Emilija SimicChristopher Patrick
    • Emilija SimicChristopher Patrick
    • G01S1/00G01S5/02G01S19/06G01S19/25H04B7/26H04Q7/38H04B7/185
    • H04B7/2606G01S5/0226G01S5/0273G01S19/256G01S19/258G01S19/46H04B7/155
    • A forward link repeater frequency watermarking (FLRFWM) system and method that enable accurate position location of mobile stations in areas where repeaters are present by watermarking repeated signals with repeater information. A repeater watermarks a forward link signal with a (unique or non-unique) fast frequency modulation waveform watermark every time a signal passes through the repeater. A mobile station detects and/or identifies the fast frequency watermark on the forward link signal to determine repeater information that aids the network position determination entity or mobile station position location system in determining position location using AFLT and/or A-GPS systems. A forward link fast frequency watermarking system described herein achieves minimal impact on FL, AFLT, and GPS performance, good detection, identification and false alarm probabilities, short time-to-detect/identify, and good detection/identification sensitivity.
    • 一种前向链路中继器频率水印(FLRFWM)系统和方法,其通过对具有中继器信息的重复信号进行水印来实现移动站在存在中继器的区域中的准确位置定位。 中继器每当信号通过中继器时,对具有(唯一或非唯一)快速频率调制波形水印的前向链路信号进行水印。 移动台在前向链路信号上检测和/或识别快速频率水印,以确定使用AFLT和/或A-GPS系统来帮助网络位置确定实体或移动台位置系统确定位置定位的中继器信息。 这里描述的前向链路快速水印系统对FL,AFLT和GPS性能,良好的检测,识别和假警报概率,短时间检测/识别以及良好的检测/识别灵敏度的影响最小。